Transmission-Reflection Performance Analysis Using Oxide Nanoparticle-Doped High Scattering Fibers

• Published in: IEEE photonics technology letters Vol. 34; no. 16; pp. 874 - 877
• Main Authors: Avellar, Leticia, Silveira, Mariana, Diaz, Camilo A. R., Marques, Carlos, Frizera, Anselmo, Blanc, Wilfried, Leal-Junior, Arnaldo
• Format: Journal Article
• Language: English
• Published: New York IEEE 15.08.2022; The Institute of Electrical and Electronics Engineers, Inc. (IEEE); Institute of Electrical and Electronics Engineers
• Subjects: Attenuation; Backscattering; nanoparticle-doped fiber; Nanoparticles; Optical attenuators; optical fiber sensor; Optical fiber sensors; Optical fibers; Optical reflection; Optical scattering; Optics; Physics; Rayleigh backscattering; Sensors; Signal to noise ratio; Spatial resolution; Transmission-reflection analysis; Optical fibers; Optical fiber sensors; Optical attenuators; Sensors; Optical reflection; Optical scattering; Signal to noise ratio
• ISSN: 1041-1135; 1941-0174
• DOI: 10.1109/LPT.2022.3190356

We present results for the disturbance location characterization of Transmission-Reflection Analysis (TRA)-based sensors using three different optical fibers doped with dielectric nanoparticles (DNP). Different DNPs (<inline-formula> <tex-math notation="LaTeX">SrO </tex-math></inline-formula>, <inline-formula> <tex-math notation="LaTeX">CaO </tex-math></inline-formula> and <inline-formula> <tex-math notation="LaTeX">MgO </tex-math></inline-formula>) lead to different sensors' performance due to the composition-dependent properties. Fibers doped with bigger DNPs lead to higher Rayleigh backscattering attenuation, which unable the use of larger fiber length. Alternatively, fibers with smaller DNPs presented spatial resolution (SR) of <inline-formula> <tex-math notation="LaTeX">0.2~cm </tex-math></inline-formula> with signal-to-noise ratio (SNR) of <inline-formula> <tex-math notation="LaTeX">32~dB </tex-math></inline-formula> for <inline-formula> <tex-math notation="LaTeX">150~cm </tex-math></inline-formula>-along fiber under test. In some fibers, the high attenuation led to a negligible backscattering power variation. The results obtained in this work indicate the feasibility of using DNP fibers in sensors applications in which the different compounds can be selected or even optimized considering the demands for each application such SNR, SR, dynamic range and sensitivity.